What is a Solution?

It is a homogeneous mixture of 2 or more substances

 

Example 1 -

If we dissolve sugar in water , it forms a solution

Here, Sugar and Water are called components of the solution

Water is called Solvent and Sugar is called Solute of a solution

 

 

Properties of a Solution

  • It is a homogeneous mixture  

            (different particles of the mixture are not visible clearly)

 

  • Particles of the solution are very small 

          (1 nm or 1/1000000000 meter)

 

 

Is Solution only of One Liquid and One Solid?

No,

Solution can contain any state of matter

 

Example 1 - Gas in Liquid Solution

Aerated Drinks (Cold drinks) contain carbon dioxide (gas) as solute and flavoured water (liquid) as solvent

 

Example 2 - Liquid in Liquid Solution

Ethyl Alcohol in Water

 

Example of Gas in Gas Solution

  • Air is also a solution (homogeneous mixture of different gases)

Main components are Nitrogen and Oxygen

Other components are present in lesser quantities

 

Example of Solid in Liquid Solution

  • Solution of Salt in Water (Water is solvent, Salt is solute)
  • Solution of Sugar in Water (Water is solvent, Sugar is solute)
  • Solution of Iodine in Alcohol (Alcohol is solvent,Iodine is Solute)

Properties of a Solution

  • It is a homogeneous mixture

It is a mixture in which different substances are completely and uniformly mixed together , it is difficult to distinguish different substances from each other.

  • Particles of the solution are very small

They are less than 1 nm (10 -9 meter) in diameter

These are so small that they can't be seen by naked eyes

  • Particles of Solution do not scatter a beam of light

If light passes through a solution, the particles of the solution don't scatter it; they do not show Tyndall Effect.

  • Solute Particles cannot be separated by filtration

Solute particles do not settle down

Hence, we can't use filter to separate them

  1. Class 9
  2. Chapter 2 Class 9 - Is Matter Around Us Pure

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo